> ## Documentation Index
> Fetch the complete documentation index at: https://voucherify-pw-further-tests.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Create SKU

> This method adds product variants to a <!-- [created product](OpenAPI.json/paths/~1products/post) -->[created product](ref:create-product). 

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> 📘 Upsert Mode
>
> If you pass an `id` or a `source_id` that already exists in the sku database, Voucherify will return a related sku object with updated fields.